Actually the typical U.S. home and small business does not have 2 or 3  
phase AC power. What we typically and incorrectly refer to as two  
phase power, or the two phases in our AC breaker panels is really a  
split single phase 240 VAC service. It would be appropriate to refer  
to this system as a 3-wire, single phase, mid-point neutral system.

-- Scott --


On Jul 22, 2008, at 8:44 AM, bigfool1956 wrote:

>
>
> I guess in the US you need three phase supplies to stop high power
> appliances, such as ovens and washers from drawing emourmous current,
> by upping the voltage.
>
>
> -- 
> bigfool1956
>
> David Ayers
> Music is what counts, hifi just helps us enjoy it more
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